ซื้อdexamethasone 100mg/100ml+neomycin sulfate 500mg/100ml ear/eye drops,solution,4ml,gramicidin 25 mcg/ml+neomycin sulfate 2mg/ml+polymyxin B sulfate 5000iu/ml eye drops,solution,5ml, chloramphenicol 1g/100g eye ointment,5g โดยวิธีเฉพาะเจาะจง